07 Yukon Denali - Passenger Side Top/Rear Oil Leak

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Jimmy James

TYF Newbie
Joined
Feb 23, 2025
Posts
1
Reaction score
0
So I had the exact same thing. Oil was spraying on the passenger side of the motor, on the exhaust manifold, and the coils. Turns out the weld that holds the oil dipstick tube has broken which (under pressure) would spray oil all over the side of the motor. I couldn't get it to do it in the garage when I would rev, but it would spew out when driving. New oil dipstick tube and no more leak. It was hard to see the break, but once I took out the 15mm bolt holding the dipstick tube in place, the mount detached and I could see where it was coming from. It was a pain to get the old one out. I had to spray carb and choke cleaner from the wheel well to clean the area that the tube goes into the side of the motor through the exhaust manifold. Put some pb blaster to lube the area up, then got it to break free. New one went in really easy. You just need to make sure you get the thing to seat in place. There is a small o-ring that needs to slide in before you put the bolt back in. Hope it helps someone.
Count me in as well. Had valve cover gasket on the passenger side replaced twice. Still had oil spraying on the exhaust manifold cover and the coils. Lots of smoke. My dipstick wasn't cracked, but it had pulled up and out of its seated position in the block. Removed dipstick support bolt and pushed it back in. Problem solved. After 283,000 on my 2007 Yukon, yanking on the dipstick without holding the tube apparently unseated the tube from the block.
 

Forum statistics

Threads
133,699
Posts
1,889,593
Members
98,968
Latest member
Larwence

Latest posts

Top